Scraper attachment.



G. E. TUCKER.

SCRAPER ATTACHMENT.

APPLICATION IILBD 1 313.29, 1012.

am me.

Patented Oct. 8, 1912.

WITNESSES m yaw.

ATTORNEYS UNITED "STATES PATENT OFFICE.

GEORGE E. TUCKER, 0F SPBINGWATEB, NEW YORK, ASSIGNOR OF ONE-HALF TOEBENEZER ROBINSON, 0F SPRINGWATER, NEW YORK "SCRAIPER ATTACHMENT.

Specification of Letters Patent.

Patented Oct. 8,1912.

Application filed February 23, 1912. Serial No. 679,287.

To all whom it may concern:

Be it known that I, Gnonon E. TUCKER, a citizen of the United States,and a resident of, Springwater, in the county of Livingston and State ofNew York, have invented a new and Improved Scraper Attachment, of whichthe following is a full, clear, and exact description.

This invention relates to improvements in road grading machines, andparticularly to attachments for scrapers and has for an object theprovision of an improved structure which will permit the scraper toreadily pass over obstructions without injury to the scraper or to themachine.

A further object of the invention is to provide a pivotally mountedscraper to which is attached one or more springs for holding the scrapernormally in position for properly scraping the earth but permitting ayielding action whereby the scraper may move pivotally and slide in acertain sense over obstructions.

In carrying out the objects of the invention, a grading machine of anydesired kind may be used, which is provided with the usual scrapersupporting shanks. Pivotally connected to these scraper supportingshanks is a scraper. which is normally held in the ordinary position ofscrapers by a spring connected to an extension from the supportingshanks which will permit the scraper to move pivotally forwardly whenthe scraper engages an immovable obstacle. One or more auxiliary springsare provided in front of the scraper for assisting in cansing thescraper to properly move to its correct position.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in both theviews.

Figure 1 is a fragmentary side view of a grading machine showing myimproved scraper attachment; and Flg. 2 is a top plan view-of thescraper attachment taken on the line 2-2 of Fig. 1.

Referring to the accompanying drawings by numerals, 1 indicates a roadgrading ma- 7 chine of any desired kind which is provided with scrapersupporting shanks 2. Asso ciated with the shanks 2 is a scraper 3,formed with lugs 4 which are held pivotally connected with the shanks 2by pins 5,

whereby the scraper 3 may freely move pivotally. Near the upper edge ofthe scraper 3 are mounted adjustable eyelets 6 and 7, to which areconnected springs 8 and 9. The opposite ends of the springs 8 and 9 tothat connected with the eyelets 6 and 7, are connected with ofi'sets 10and 11 projecting from brackets 12 and 13 rigidly secured to the shanks2. The springs 8 and 9 are of the retractile kind and normally hold thescraper 3 to the position shown in the drawings, but will permit thescraper to move pivotally forward therefrom to any desired extent forallowing the scraper to pass over the obstacles.

Connected to the upper part of the scraper 3 are rings 14.- and 15 whichhave secured thereto springs 16 and 17. The springs 16 and 17 are alsoconnected at their forward ends to eyelets 18 rigidly secured to theshanks 2. The springs 16 and 17 are designed to resiliently resist anyrearward movement of the scraper 3 from the position shown in Fig.1, andalso to assist 1n holding the scraper 3 in its normal position. Thesprings 16 and 17 are also adapted to relieve the jar from the reactionof the springs 8 and 9 and may be adjusted by shifting the eyelets orhooks 18 back and forth for causing the springs 16 and 17 to exert anydesiredtension on the scraper. In connection with the tension exerted onthe scraper 3, it will be noted that the springs 8 and 9 are connectedwith eyelets 6 and 7 which are adjusted vertically for providing more orless tension on the scraper as occasion may require so as to give thenecessary leverage for different conditions.

In use the machine is moved over the ground drawn by any suitable power,as

or instance, draft animals or steam power, and the scraper 3 is adaptedto operate in the usual manner until the same strikes an .obstacle,whereupon the upper edge of the scraper will continue to move, while thelower edge will remain stationary until the scraper is permitted to slipover the obstacle. If the obstacle is of an considerable size thepivotal movement of tlie scraper will usually cause a slight upwardmovement of the shanks 2. By the construction and arrangement of thescraper on pivotal supports and the bracing or holding in place of thescraper by springs, a construction is presented which will permit theuse of the scraper on any kind of ground regardless of the obstaclestherein,-without any danger of injuring the scraper on the machine.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a device of the character described, thecombination with a support, of a scraper blade pivotally mounted on saidsupport, a plurality of adjustable plates arranged near the upper edgeof the scraper blade, a pair of restraining springs connected with saidadjustable plates for normally and resiliently resisting the pivotalmovement of the scraper blade, and a plurality of springs actingsubstantially in opposition to said first named springs for holding thescraper blade in a predetermined position.

2. In a device of the character described,

rea ers the combination with a supporting vehicle, of a pivotallymounted scraper connected with said supporting vehicle, a plurality ofinwardly extending brackets connected with said supporting vehicle, aspring for each of said brackets GEORGE E. TUCKER.

Witnesses JOHN S. OAPRQN, HENRY SHELTER.

connected therewith at one end and with the upper part of said scraper

